John Alexander Lata Guacho, Diogo Turiani Hourneaux de Moura, Igor Braga Ribeiro, Alberto Machado da Ponte Neto, Marina Gammaro Baldavira Tucci, Wanderley Marques Bernardo, Eduardo Guimarães Hourneaux de Moura, Gastrointestinal Endoscopy Unit, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo 05403-010, Brazil
Shailendra Singh, Division of Gastroenterology, Department of Internal Medicine, West Virginia University, Charleston, WV 25304, United States
Author contributions: Guacho JAL and de Moura DTH contributed to acquisition of data, analysis, interpretation of data, drafting the article, revising the article, final approval; Ribeiro IB, da Ponte Neto AM and Singh S contributed to analysis and interpretation of data, revising the article; Tucci M contributed to acquisition of data drafting the article, final approval; Bernardo WM contributed to analysis and interpretation of data, drafting the article, final approval; de Moura EGH contributed to analysis and interpretation of data, drafting the article, revising the article, final approval.
Conflict-of-interest statement: The authors deny any conflict of interest.
PRISMA 2009 Checklist statement: The authors have read the PRISMA 2009 Checklist, and the manuscript was prepared and revised in accordance with this checklist.
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Corresponding author: Igor Braga Ribeiro, MD, Research Fellow, Surgeon, Gastrointestinal Endoscopy Unit, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Av. Dr Enéas de Carvalho Aguiar, 225, 6o andar, bloco 3, Cerqueira Cesar, São Paulo 05403-010, Brazil. email@example.com
Received: March 31, 2020
Peer-review started: March 31, 2020
First decision: June 7, 2020
Revised: June 12, 2020
Accepted: July 18, 2020
Article in press: July 18, 2020
Published online: August 16, 2020